﻿
<div style="border:1px solid black;margin:10px">
    <h3>Father <Button OnClick="OnRef">刷新</Button></h3>
    <dvi>me:<Input @bind-Value="@value" /></dvi>
    <CascadingValue Value="this">
        <Son></Son>
    </CascadingValue>

</div>
@code {

    public string value { get; set; }

    public void OnRef()
    {
        StateHasChanged();
    }
}
